This interactive Java applet helps students learn about sequences and patterns through analysis of attributes. The user analyzes the existing pattern and must complete the "train" by dragging the appropriate shapes into place. The user is required to discern which attribute is used to create the pattern (color, shape, or number) as well as determine how to extend it.

This interactive Sudoku puzzle develops logical thinking and perseverance. With this puzzle a player must place the fall items in the cells such that each picture appears only once in each row, once in each column, and once in each 3x3 grid.

This interactive Java learning tool, which was constructed using the cross-platform open educational resource GeoGebra, allows a teacher to demonstrate and explore integer operations with students using two different balloons and sandbags models. Drag balloons, sandbags, and/or zero pairs onto the board and students see how the total result shown on the board changes the models. Nine pre-set integer addition and subtraction problems are given, as well as the ability to create your own problems (option 10). An alert is given when the first term of each expression is formed. (The models can also be used during discussions of multiplication and division, although no problems are included.)

In this application students must use the Bamzooki creatures to find the Median, Mode, Mean, and Range. Students receive a score for the amount correct and are given tips when they complete a task incorrectly. The application is accompanied by a link to definitions for each term and a link to a multiple choice quiz.

This collection from NRICH provides activities to help learners think and work like a mathematician. Tasks have students exploring, questioning, working systematically, visualizing, conjecturing, explaining, generalizing and justifying. Activities are organized under specific strategies and processes.

This collection from NRICH provides activities to help learners think and work like a mathematician. Tasks have students exploring, questioning, working systematically, visualizing, conjecturing, explaining, generalizing and justifying. Activities are listed under strategies and processes.

In this formative assessment lesson students identify patterns (both linear and exponential) in a realistic context. They may solve this problem through a variety of strategies, providing opportunities for groups of students to share and critique various problem solving approaches.

This interactive Flash game gives students practice in identifying multiples of given numbers. Users choose two multiplication tables (from 2 to 9) and the number of examples/bees they want to try (from 4 to 34). The game displays the chosen number of bees with numbers on them; users identify whether each is a multiple of one factor or the other, both factors, or neither factor. At the end of a round players may check their answers. ["e" = "and" in Italian]

This interactive resource allows students to determine the maximum number of possible braille codes there are and promotes the need to to work systemically. The Braille system uses dots either raised (bumps) or not, arranged in three rows by two columns. Students work out the answers to guided questions, complete tables and feedback is provided.

This interactive Flash lesson helps students to distinguish circles from other shapes in a real world environment. The animated pages give printed and voiced instructions. A pdf teacher guide is available at MathActive Lessons for Grades K-2 (cataloged separately), which also includes links to unvoiced, Navajo, and Spanish versions of the lesson (see #1, 3, 4).